I'd guess about any but I prefer to give plain yoghurt. I don't like artificial sweeteners but would be fine giving them 'regular' fruit yoghurt.I usually give mine homemade yoghurt, plain, organic and pretty much like greek style...They love it

Quote:Same fruit as any other chicken. However, I'd go easy on the fruit if they are still young. Treats should be no more than 10% of their total daily intake. This is especially important when they are young and still growing rapidly. They need the complete nutrition of their prepared feed.
ETA: I don't consider yogurt and egg to be "treats", in that they are both good for them. Still, go lightly.

Keep in mind, keep the amounts of these treats small, especially while your chicks are young.
Also, your chickens will need a source of grit once they start eating things other than their chick starter.